🚀 go-pugleaf

I'm looking for definitive references for LOGO.  I would like a book or books
analogous to Kernighan and Ritchie for C, or Clocksin and Mellish for Prolog.
Are there any such?  I have found books of varying formality, but none that are
really precise (although I'm still following up a couple of references); most
books about logo are actually about education, and not really about the
programming language.  For example, I've not encountered a rigorous definition
of a logo token, especially with respect to the meaning of backslash as either
a special-character-preventer or the ``mod'' operator token.  Another example:
I don't have enough information to know whether or not the colon can be treated
as a macro which expands to "thing", space, quote.

e-mail please, and if you request I will summarize to the net.

thanks in advance,
ajr		<flaps@dgp.utoronto.ca>  or  <flaps@dgp.toronto.edu>
		flaps at utorgpu on bitnet